纤维素纤维对渡槽C50混凝土的性能影响

Effect of cellulose fiber on performances of C50 concrete for aqueduct

研究了纤维素纤维对渡槽C50混凝土的工作性、力学性能、抗渗性能及塑性收缩开裂特性的影响,并与聚丙烯纤维进行了对比。结果显示,掺纤维素纤维使混凝土的工作性能略有降低,对抗压强度影响不大,显著提升了混凝土的劈拉强度、抗裂性及抗渗性,表现出了比聚丙烯纤维优越的性能,更适合渡槽混凝土抗裂防渗的要求。

Effect of cellulose fiber on workability,mechanical properties,anti-permeability and plastic shrinkage crack propagation of C50 grade concrete for aqueduct was investigated,which was compared with that of polypropylene fiber.The results indicate that the anti-permeability, cracking-resistance property and splitting strength of concrete are improved because of the addition of cellulose fiber.The workability of concrete decreases and the compressive strength was scarcely changed with the increase of fiber content.That shows that the concrete with cellulose fiber has better anti-permeability and cracking-resistance property than that with polypropylene fiber.